Sony has announced that 12 indie games will soon be coming to PS4. Some of these titles are or will also be available on PS3 and/or PS Vita.
The titles that will be released only on PS4 are:
Nidhogg - Mark Essen's minimalist two-player fencing extravaganza.
Skulls of the Shogun: The Bone-a-Fide Edition - 17-Bit's turn-based strategy game.
Source - Fenix Fire Games' stylish 3D Metroidvania.
Chasm - Discord Games' procedurally-generated adventure platformer.
Jamestown Plus - Final Form Games co-op shmup.
Ironclad Tactics - Zachtronics' rapid-fire card-based strategy game.
Apotheon - AlienTrap's stylish 2D ancient Greek platforming adventure.
Escape Goat 2 - MagicTimeBean's puzzle platformer presented by Double Fine.
The titles that will be multi-platform are:
Spelunky (PS4, PS3, Vita) - Mossmouth's epic action roguelike and maybe greatest game ever.
Drifter (PS4 and Vita) - Celsius Game Studios' space exploration sandbox game.
Starwhal: Just the Tip (PS4, PS3) - Breakfall's minimalist competitive multiplayer game about wobbly space creatures.
Axiom Verge (PS4, Vita) - Pub Fund-supported retro Metroidvania about using glitches to overcome challenges.
Source: Playstation Blog